A conservative activist and literary agent who was instrumental in uncovering former President Bill Clinton’s illicit affair with White House intern Monica Lewinsky, which led to Clinton’s impeachment, has passed away.

Lucianne Goldberg, who was the mother of conservative author and pundit Jonah Goldberg, was 87 years old when she died on Thursday, according to Fox News.

Beloved mother mourned by her grieving son

The sad news of Goldberg’s passing was shared on social media by her son, Jonah, who wrote, “The news is now out there. So, I should say something here. My beloved mom, Lucianne Goldberg, passed away yesterday. She died peacefully at home, surrounded by people — and pets! — who loved her.”

“My mom lived the most incredible life. She was wildly accomplished before most people ever heard of her during the Clinton brouhaha. Tough, brilliant, incredibly funny, she was many things to many people. But for me, she was just my mom,” he continued.

Goldberg went on to reminisce over good memories of his beloved mother as he processed his grief and suggested that he’d have more to say about her in the future, and thanked everyone who had already expressed their condolences for his loss.

He also linked in his thread of tweets to a humorous and moving ode to his mother in Commentary from one of her dear friends, conservative author and pundit John Podhoretz, who had been close with Lucianne for nearly 40 years.

Helped expose Clinton’s affair with Lewinsky

According to the Associated Press, Goldberg was born in Boston, Massachusetts in 1935 and first established herself as a conservative activist in the 1970s by forming and leading a group known as the Pussycat League that was decidedly anti-feminist and stood against the proposed Equal Rights Amendment.

In the 1980s, she forged a path as a literary agent in New York City who specialized in publishing conservative books that other publishing houses would reject, and also wrote a few books for herself and as a ghostwriter for others.

It was in the late 1990s that Goldberg became most famous, however, after she befriended Linda Tripp while investigating the suspicious suicide of Clinton aide Vince Foster for a book. It was through Tripp that Goldberg later learned of the president’s illicit affair with Lewinsky, and she encouraged Tripp to secretly record her phone calls with Lewinsky to gain even more information about the trysts in the Oval Office.

Those tapes were eventually handed over to Special Counsel Kenn Starr, which then led to Clinton’s impeachment after he was caught lying under oath in a false denial of the affair. Clinton, of course, was ultimately acquitted by the Senate and was not removed from office.

Son Jonah her only survivor

Goldberg is survived only by her son Jonah and his family, as he second husband, Sidney Goldberg, passed away in 2005, and her other son, Joshua, died in 2011.

It remains unknown at this time what her cause of death was.